问题 更新时间2023/4/3 12:59:00 The cost of using the telephone, which involves a flat rate per monthplus a fee for extra usage, would be considered a:A、step costB、fixed costC、variable costD、mixed cost 答案 登录 注册 正确答案: D 出自:超星 >> 郑州航空工业管理学院-管理会计学